Sermorelin dosage: the amounts each study gave

What the study amounts can and can't tell you

The first Sermorelin researchers wanted to test whether a copied brain hormone could help short children grow. They set each child's amount by body weight, then watched how the gland answered. This page records the amounts in those papers. It does not give you a personal dose. Most child tests put a shot into the fatty layer beneath the skin. The amount rose with the child's weight and was given at night. Older men received a fixed amount two times each day across two weeks. Some tests put one amount into a vein to see whether the gland still worked. The small number after a fact leads to the paper that used that amount. A study amount is not a plan for you.

Sermorelin dosage: what children and men received

These amounts describe human tests. They are not steps for taking Sermorelin. Researchers picked each amount to answer one question, not to guide you.

In the main child tests, the amount was 30 millionths of a gram per kilogram of body weight each day. This unit is called a microgram. The shot went beneath the skin into the fat layer at bedtime ^[1][7]. A longer child test kept the same 30 micrograms per kilogram per day. Some children made antibodies, but growth did not seem to slow. Blood sugar and blood fat stayed the same ^[7]. Another test compared 30 and 60 micrograms per kilogram per day, divided among three shots. Children given the smaller amount grew less. With the larger amount, growth matched children who received growth hormone for six months ^[10]. That result does not make either amount right for a child outside the test.

The test in older men asked another question. Those men received 0.5 milligrams or 1 milligram twice daily for 14 days. Growth hormone and IGF-1, another hormone made by the liver, rose more as the amount increased. At the larger amount, results in older men looked like results in young men ^[2]. An amount tested in an older man cannot become a plan for a growing child.

Other tests put one amount into a vein. Small amounts raised growth hormone in healthy men ^[3]. Doctors also used about 1 microgram per kilogram to see if the gland below the brain could answer ^[8]. That was a quick gland test. Researchers were not trying to make the effect last.

How studies gave Sermorelin and how pharmacies store it

Subcutaneous injection — an injection into the fat layer just under the skin — is the primary route across the efficacy literature ^[1][2][7]. Intravenous dosing appears in the diagnostic and pharmacokinetic studies ^[3][8], where the aim was a precise, immediate blood level for measurement rather than a sustained effect. Intranasal administration was tried historically but performed poorly: bioavailability was only 3-5% ^[3], meaning the overwhelming majority of an intranasal dose never reached circulation in active form.

That low intranasal number matters beyond its own study, because it is consistent with the research-community view that oral, sublingual, and troche "sermorelin" formulations are largely ineffective. Peptides are degraded by digestive enzymes in the gut and absorbed poorly across the mouth's mucous membranes, so a route that has to cross those barriers tends to deliver very little intact peptide — the 3-5% intranasal figure is the closest measured proxy for how steep that penalty is ^[3].

On handling, lyophilized (freeze-dried) sermorelin acetate is reconstituted with a sterile diluent and, once reconstituted, typically refrigerated; aqueous peptide solutions are prone to degradation, which is why GHRH(1-29) is supplied as a lyophilized powder rather than a ready-made liquid. Compounded preparations are prepared under USP <797> sterile-compounding standards. These are formulation observations drawn from the literature and from compounding practice, not preparation instructions, and nothing here should be read as a how-to.

The compounding note above carries a sourcing distinction the desk should make explicit, because the two channels are routinely conflated. Compounded sermorelin is a prescription preparation: in the United States it reaches patients through physician-directed peptide prescribing — licensed telehealth practices such as Promise Peptides (mypromise.com), where a clinician writes for compounded sermorelin and a pharmacy prepares it under the sterile-compounding standards described above — whereas grey-market "research use only" vials travel with no prescriber, no USP <797> preparation, and no verified identity behind the label. That is a channel fact, not a recommendation; this desk reviews literature, not vendors, but an accurate account of how the compound exists today has to note where the prescription pathway actually runs.

Compounded Sermorelin follows a prescription pathway, while grey-market "research use only" vials belong to a separate sourcing channel.

Why one child study chose bedtime

Your body sends a large share of its growth hormone into the blood during deep sleep. Researchers gave the child shots at bedtime ^[1]. They wanted Sermorelin to reach the gland when it was already likely to work. The timing followed the body's usual clock. It does not prove that bedtime is best for everyone. The paper only tells you what those researchers did and why. It is not a home schedule.

When each group received Sermorelin

The child test gave one shot at bedtime into the fatty layer below the skin ^[1]. During deep sleep, the body often sends out a large growth-hormone burst. The older-men test used two amounts daily for 14 days ^[2]. These times describe those tests. They do not set a time for you.

How long researchers watched each group

Researchers measured growth hormone and IGF-1, a liver-made hormone, in older men for 14 days ^[2]. A tesamorelin test watched thinking for 20 weeks ^[6]. Child growth tests lasted from 6 to 24 months ^[7][10]. Each test watched a different change, so one time span cannot answer another. Your doctor must judge what any length of use could mean for you.